Finite Group Databasebeta

C2×D7805 #44530252

order31220
automorphism?
homologyAbelianization (H1) = C22 · Schur multiplier (H2) = C2

Aliases

dihedralD15610
direct productC2×D7805
unambiguous semidirect product(C2×C5)⋊D1561
unambiguous semidirect product(C2×C7)⋊D1115
unambiguous semidirect product(C2×C223)⋊D35

Splittings

Fitting, socleC2×C5×C7×C223 ⋊ C2
derived, HallC5×C7×C223 ⋊ C22
HallC7×C223 ⋊ C2×D5
HallC5×C223 ⋊ C2×D7
SylowC223 ⋊ C2×D35
HallC5×C7 ⋊ C2×D223
SylowC7 ⋊ C2×D1115
SylowC5 ⋊ C2×D1561

Subgroups

subgroupG/H
center, hypercenterC2D7805
commutator, cosocle, hypocenterC5×C7×C223C22
FrattiniC1G
Fitting, socleC2×C5×C7×C223C2
LCSG ▷ C5×C7×C223
UCSC1 ◁ C2

40 conjugacy classes of subgroups.

Full subgroup data →

Presentation

minimal degreeμ(G) = 237
transitive degreeμt(G) = 15610

A minimal faithful permutation representation — 2 generators on 237 points:

(1,2)(3,4,5,6,7)(8,9,10,11,12,13,14)(15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63,64,65,66,67,68,69,70,71,72,73,74,75,76,77,78,79,80,81,82,83,84,85,86,87,88,89,90,91,92,93,94,95,96,97,98,99,100,101,102,103,104,105,106,107,108,109,110,111,112,113,114,115,116,117,118,119,120,121,122,123,124,125,126,127,128,129,130,131,132,133,134,135,136,137,138,139,140,141,142,143,144,145,146,147,148,149,150,151,152,153,154,155,156,157,158,159,160,161,162,163,164,165,166,167,168,169,170,171,172,173,174,175,176,177,178,179,180,181,182,183,184,185,186,187,188,189,190,191,192,193,194,195,196,197,198,199,200,201,202,203,204,205,206,207,208,209,210,211,212,213,214,215,216,217,218,219,220,221,222,223,224,225,226,227,228,229,230,231,232,233,234,235,236,237);(4,7)(5,6)(9,14)(10,13)(11,12)(16,237)(17,236)(18,235)(19,234)(20,233)(21,232)(22,231)(23,230)(24,229)(25,228)(26,227)(27,226)(28,225)(29,224)(30,223)(31,222)(32,221)(33,220)(34,219)(35,218)(36,217)(37,216)(38,215)(39,214)(40,213)(41,212)(42,211)(43,210)(44,209)(45,208)(46,207)(47,206)(48,205)(49,204)(50,203)(51,202)(52,201)(53,200)(54,199)(55,198)(56,197)(57,196)(58,195)(59,194)(60,193)(61,192)(62,191)(63,190)(64,189)(65,188)(66,187)(67,186)(68,185)(69,184)(70,183)(71,182)(72,181)(73,180)(74,179)(75,178)(76,177)(77,176)(78,175)(79,174)(80,173)(81,172)(82,171)(83,170)(84,169)(85,168)(86,167)(87,166)(88,165)(89,164)(90,163)(91,162)(92,161)(93,160)(94,159)(95,158)(96,157)(97,156)(98,155)(99,154)(100,153)(101,152)(102,151)(103,150)(104,149)(105,148)(106,147)(107,146)(108,145)(109,144)(110,143)(111,142)(112,141)(113,140)(114,139)(115,138)(116,137)(117,136)(118,135)(119,134)(120,133)(121,132)(122,131)(123,130)(124,129)(125,128)(126,127)

Conjugacy classes & character table

7808 conjugacy classes. The character table is too large to display.

Relationships

maximal subgroup ofD31220
maximal normal subgroup ofD31220
maximal quotient ofDic15610, D31220

GAP

Construct this group in GAP via the SmallGroups library:

gap> SmallGroup(31220, 27);